To start with, when the first Insider releases came, I was not at all confident that Windows 10 Mobile was going to be worth the pain. But months later, it is really becoming a nice OS. With that being said, one of the big things I was waiting for was GIF support. Unfortunately it is a mess. I can save a gif. It will play fine. If I send it through SMS immediately, all is well. But if I wait a while and try to send the same GIF through SMS, it fails. It is almost like there is a timer and after it goes off, the gif you saved, expires. Also, it is far to hard to save a gif from the browser or one that was sent through sms. This really shouldn't be that hard to get working after this long.